The Energy Stored in the Earth's Magnetic Field with a Strength

question 73

Multiple Choice

The energy stored in the earth's magnetic field with a strength of 0.5 × 10^-4 T in a room 3.0 m by 4.0 m by 2.4 m is

• A)570 mJ.
• B)29 mJ
• C)10 mJ.
• D)100 mJ.
• E)zero.

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